#a2{
    width: 100%;
    height: 600px;
    border-top: 1px solid rgb(238,238,238);
    border-bottom: 1px solid rgb(238,238,238);

}
#div3{
    margin: 67px auto;
    width: 1250px;
    height: 800px;

}

#div4{
    width: 300px;
    float: right;
}

#div3-2{
    float: left;
    width: 452px;
    height: 372px;
    box-shadow: 5px 5px 10px black;
    margin-top: 18px;

}
#div3-2-1{
    margin: 20px auto;
    width: 352px;
}

#div3-2-1>div:nth-child(1){
    font-size: 22px;
    font-weight: 400;
    float: left;
}
#div3-2-1>div:nth-child(2){
    float: right;
    line-height: 36px;
    font-size: 14px;
}
ins{
    color: rgb(200,15,42);
}
#div3-2-2{
    margin: 20px auto;
    width: 352px;
}